Product process: Imported synthetic material, after the special craft a suppression and become, moistureproof, fire prevention. Infrared technique: Benefit from the infrared sensor, the ability of mechanical interference was improved. Six detecting zones: All of the detecting area was divided into six equal pieces which interlaps, so different zones can alarm and light at the same time. Intuitive dispaly: The LED alarming light for each zone was built in both sides of the bilateral pillar. Alarming time: It can be set 1～8 Second,you could press corresponding number. Alarming volume: It can be set 1～8 degree,you could press corresponding number. Alarming tone: There`s 8 tomes to choose,you could press corresponding number. Regional sensitivity is adjustable: The sensitivity can be adjust be...